The decision to buy a swimmer with your hands is often driven by a desire to save money or find a rare model that has been discontinued. The market for used water vehicles is huge, but this is where the most pitfalls lie for the inexperienced buyer. Plastic boat It may look perfect from the outside, but have critical design defects that only show up on the water.
Unlike inflatable counterparts, a rigid case requires careful checks for bundles, microcracks and factory assembly quality. In this article, we will discuss what to look for first, how to distinguish a professional body from a professional body. fiberglass from a homemade "spawn" boat and what questions you must ask the seller before the transaction.
Your safety and comfort on the water is directly dependent on the technical condition of the vessel. Don't rely on the owner's assurances that "the boat has been sailing for five years and nothing has happened."
The benefits and risks of buying used plasticBuying a used boat gives you the opportunity to buy a higher-end model for the same money. Often, water enthusiasts change their equipment every year, selling almost new products with minimal production. Plastic glass enclosures They have a huge resource of strength, and with proper care can serve for decades.
But the risks are also significant: Plastic, especially if it is manufactured in a faulty manner, can gain moisture over time, becoming heavier and losing its buoyancy, and the previous owner may have concealed the impacts on rocks or the bottom that caused internal damage to the material's structure.
It's important to understand the difference between factory production and garage-built boats, and factory plastics have predictable specifications, whereas artisanal products can behave unpredictably under load.
Visual inspection of the body: looking for hidden defectsThe first thing that you notice when you look at it is the gelcoat, the top decorative and protective layer of plastic, and chipping, scratching and scuffing is normal for the used thing, but the nature of the damage can tell you a lot, and if you see the deep cracks through which the reinforcement layer is seen, it's a signal that there's a possible leakage.
Carefully examine the transom, the motor attachment area, which is the maximum load and vibration zone, and cracks around the fasteners or bloating of the coating may indicate that the previous owner has operated a boat with an improperly selected engine or has been hit by a trench against the water during the wave.
Take a powerful flashlight with you to see it, and sharp-angled light can reveal microcracks and surface irregularities that are invisible in normal daylight.
Notice the color of the plastic. If the boat has been repaired, the repair sites may have different shades or textures, and the irregularities, the waves on the boards often indicate a violation of the molding technology or the use of a kind of cubby binder.
Technical inspection: tapping and measurementOne of the oldest and most reliable ways to diagnose fiberglass is by acoustic method, you'll need a wooden screwdriver handle or a special hammer, you'll need to go through the whole body with light taps, and the sound should be ringing and the same across the surface.
A deaf, empty sound indicates that the fiberglass has detached from the filler or that there are voids (delamination), which can eventually become through holes under water pressure, and pay special attention to the keel, cheekbones and transitions from side to bottom.
☑️ Checklist for body inspection
If you can, use a moisture meter for composites, and this device will show the percentage of moisture inside the plastic structure. Increased humidity of the hull (more than 5% of the mass) indicates that the boat stood on the water for a long time without antifouling coating or has hidden damage.
Also check the condition of the forepeak and the runduks. There should be no smell of gasoline or oil, which may indicate that the built-in fuel tanks are leaky (if they are structurally provided).
Features of different materials: fiberglass vs polyethyleneIn the secondary market, there are boats made of different types of polymers, and each has its own specifications of operation.GFRP) It's a classic that requires a careful attitude to the helcoat, which is tough, keeps fit, but is afraid of hitting hard.
Rotary-formed plastic boats are more resistant to shock and abrasion, they spring on impact, which often saves them from collapse, but polyethylene is afraid of ultraviolet light and can become fragile over time if the boat has been in the open sun for years without a tent.
| specifications | Plasticglass (GFRP) | Polyethylene (PE) | Aluminum (for comparison) |
| :--- | :--- | :--- | :--- |
| Repairability | Medium (skills, resins needed) | Complex (PE welded) | High (cooking, riveting) |
| Weight. | Medium/Severe | Medium |Light |
| Impact resistance | Low (cracking) | High (straining) | Medium (crumpling) |
| Term of service | 20+ years | 15-20 years | 30+ years |
| The price of b/o | Medium | Low/Mediocre | High |
The Myth of “Eternal” Plastic
There is a belief that plastic doesn't rot. This is only partly true. Fiberglass doesn't rot like wood, but it is hydrolyzed by binders in constant contact with water and UV radiation, and polyethylene can oxidize and lose elasticity.
When choosing between materials, consider storage conditions. If you don't have a covered space or garage, polyethylene can be more capricious than fiberglass in the long run due to burnout and loss of properties.
Engine installation and attachmentsOften, the boat is sold with an engine, the kit is more profitable, but it is more risky. If the boat is plastic, pay special attention to the condition of the lower units (the passageway of the control shafts and gas), Luft in them is unacceptable, the oils must be dry.
Check the condition of the motor cushion. On plastic boats, the motor is often attached to a wooden or composite cushion mounted in a transom. The tree rots over time. Knock on the transom: a deaf sound can mean rot inside.
Buying a boat with an engine is only justified if you can start the engine and let it work on land (in a container of water) or on water. "Cat in a bag" in the form of a non-functioning engine is a guaranteed investment that exceeds the cost of the engine itself.
Check the lower units and the roumpel-stock. The control mechanism should run smoothly, without jamming. The control cables should not be rusty or broken. Also check the presence and condition of drain stoppers - their loss in swimming on a plastic boat is less critical than on an inflatable one, but the water in the hold is always an extra load and a risk to electrical equipment.
Legal aspects and documents of GIMSPurchase of used boats is not only technical, but also legal process. In Russia, small-sized vessels are subject to registration in the GIMS of the Ministry of Emergency Situations if their weight of loaded equipment exceeds 200 kg or engine power exceeds 8 kW (about 10 hp).
You must be handed a boat's ticket, and without this document you will not be able to legally use the boat, and when checking documents on the water you will be fined and detained until you find out the circumstances, check whether the number of the hull on the transom (knocked out or pasted) matches the data in the boat's ticket.
What to do if there are no documents?
If the seller claims that the boat did not require registration, ask for documentary evidence (factory passport with the indication of the mass). If the boat is homemade or documents are lost, it will be extremely difficult and expensive to register it post-factum, technical examination will be required.
Also make sure there are no encumbrances on the boat, although the boats' mortgage registry is not as transparent as cars, it's worth asking the seller to write a handwritten receipt stating that he is the sole owner and the boat is not in pledge or theft.
FAQ: Frequently asked questions
Can I return the boat to the seller if there are defects?
Under consumer law, used goods purchased from a private person are usually not refundable unless otherwise stated in the sales contract, except if the seller concealed material defects that he knew about but did not report, which is difficult to prove, so all the terms must be recorded in the receipt.
What is the life of a plastic boat?
When properly operated and stored, fiberglass lasts for 20 to 30 years or more. Polyethylene boats live a little shorter, about 15 to 20 years, after which the material can start to "age" and crack. The key factor is storage in the shade and lack of constant contact with water in the off-season.
Should I buy a boat with a broken side?
If the damage is local and doesn't affect the power kit, fiberglass is great for repair, but buying a boat with a hole already sealed is a risk. You don't know how the repair is done or if the geometry is broken. You'd better consider a whole but worn hull.
Do I need to rewrite the boat to GIMS when buying?
The new owner must apply to the GIMS within 10 days to make changes to the register of small craft, which will require a contract of sale (even handwritten), old boat ID and passports of the parties.